In the past few days, the editor was sorting out a summary of java interview questions. I accidentally found this Alibaba interviewer manual. This interview question is really different from the previous Java core interview knowledge points. This interviewer manual is completely different. Analyze the question from the perspective of the interviewer's question, and ask how good it is. We just look at the catalog and we are done.
Because of it, it is enough to deal with most of the Java interviews currently on the market, because this article has covered a lot of Java knowledge in terms of depth and breadth.
The included modules have seven major points:
- distributed
- Middleware
- Big data and high concurrency
- database
- Design patterns and practices
- Data Structures and Algorithms
- Examples of HR interview questions
List:
Due to space reasons, in order to avoid affecting everyone's reading experience, only part of the content is shown in screenshots. The detailed and complete version is available for free at the end of the article!
Article 1: Distributed
1. Characteristics of large-scale website system
- High concurrency, large traffic
- High availability
- Massive Data
- Wide distribution of users and complex network conditions
2. The evolution of large-scale website architecture
- Initial site architecture
- Application service and data service separation
- Use cache to improve website performance
- Distributed microservices
Three, split VS cluster
Four, microservices VS SOA
Five, the front and back ends are completely separated from the Rest specification
Six, CAP three in two and Base theorem
- Relational databases follow ACID rules
- BASE theorem
- Distributed consensus theory paxos, raft, zab algorithm
Distributed microservices
CAP three in two
The second chapter : Middleware
One, cache
- Why use caching
- Excellent caching system Redis
- Redis expiration strategy and memory elimination mechanism
- Progressive ReHash
- Cache penetration
- Cache avalanche
Second, the message queue
- Message queue application scenario
- Traffic cut
- Message middleware example
- E-commerce system
- Log collection system
- Asynchronous transaction-callback mechanism
Three, search engine
- Inverted index
- Create index
- Search index
- Lucene和ElasticSearch
- Tokenizer
Middleware
Message queue application scenario
The third chapter : big data and high concurrency
- Spike architecture design
- Development history of database architecture
- MySQL's scalability bottleneck
- Why use NOSQL NOT ONLY SQL
- Traditional RDBMS VS NOSQL
- Types of NOSQL databases
- How to store product information on Alibaba Chinese station
- Horizontal split and vertical split of data
- Distributed transaction
- BitMap
- Bloom Filter
- Common current limiting algorithms
- Load balancing
- Consistent Hash algorithm
Spike architecture design
Spike overall flow chart
The fourth chapter : Database
- Database paradigm
- Database development specifications
- Database index
- MyISAM vs InnoDB
- Problems caused by concurrent transactions
- Transaction isolation level and lock implementation mechanism
- MVCC (Multi-Version Concurrency Control)
- Gap lock and phantom reading
Index implementation mechanism
Gap lock and phantom reading
The fifth chapter : Design Patterns and Practice
- Five principles of OOP SOLID
- Design Patterns
- Agency model
- Aspect Oriented Programming (AOP)
- Factory mode
- Inversion of Control IOC
- Observer mode
- Zookeeper
Factory mode
Zookeeper
Chapter 6 : Data Structure and Algorithm
- tree
- BST tree
- BST tree
- AVL tree
- Red black tree
- B-tree
- B+ tree
- Dictionary tree
- Skip table
- HashMap
- ConcurrentHashMap
- ConcurrentLinkedQueue
- Topk problem
- Resource pool thinking
- JVM memory management algorithm
- Container virtualization technology, Doocker thought
- Continuous integration, continuous release, jenkins
Data Structures and Algorithms
JVM memory management algorithm
The seventh chapter : HR interview questions, for example
- Design a globally unique issuer in a distributed environment
- Design an LRU cache with expiration time
- Design a distributed lock
- Design a system-configuration center in a distributed environment
- How to prepare for HR interview
Design an LRU cache with expiration time
Design a unified configuration center in a distributed environment
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